Martin Kaste

Martin Kaste is a correspondent on NPR's National desk. He covers law enforcement and privacy, as well as news from the Pacific Northwest.

In addition to general assignment reporting in the U.S., Kaste has contributed to NPR News coverage of major world events, including the 2010 earthquake in Haiti and the 2011 uprising in Libya.

Kaste has reported on the government's warrant-less wiretapping practices as well as the data-collection and analysis that go on behind the scenes in social media and other new media. His privacy reporting was cited in the U.S. Supreme Court's 2012 United States v. Jones ruling concerning GPS tracking.

Before moving to the West Coast, Kaste spent five years as NPR's reporter in South America. He covered the drug wars in Colombia, the financial meltdown in Argentina, the rise of Brazilian president Luiz Inacio "Lula" da Silva, Venezuela's Hugo Chavez, and the fall of Haiti's president Jean Bertrand Aristide. Throughout this assignment, Kaste covered the overthrow of five presidents in five years.

Prior to joining NPR in 2000, Kaste was a political reporter for Minnesota Public Radio in St. Paul for seven years.

Amid the recent pressure on police to wear body cameras, one thing is often overlooked: Not all cameras are created equal. In fact, cameras vary a lot — and the variations — some contentious — can have a profound effect on how the cameras are used and who benefits from them.

Take the buffer function. Most cameras buffer — they save video of what happens just before an officer presses record.

Taser is a leading company in the body camera business. Its buffer function doesn't include sound.

Over the summer, the Texas Forensic Science Commission, which sets standards for physical evidence in state courts, came to an unsettling conclusion: There was something wrong with how state labs were analyzing DNA evidence.

It seemed the labs were using an outdated protocol for calculating the probability of DNA matches in "mixtures"; that is, crime scene samples that contain genetic material from several people. It may have affected thousands of cases going back to 1999.

After the mass shooting in Roseburg, Ore., last week, the national media gave a lot of attention to the fact that the local sheriff, John Hanlin, is an ardent supporter of gun rights. He'd written a letter to Vice President Joe Biden shortly after the Dec. 14, 2012, massacre of schoolchildren at Sandy Hook Elementary in Newtown, Conn., saying gun control was not the answer. In the letter, Hanlin pledged not to enforce gun regulations he believed to be unconstitutional.

What wasn't widely reported was how common views like Hanlin's have become in law enforcement.

The ambush-style murder of Sheriff Deputy Darren Goforth at a gas station in suburban Houston on Aug. 29 has added new urgency to warnings about a growing "war on cops" in America. After the arrest of the suspect, an African-American man named Shannon J. Miles, the local district attorney called for more public support for law enforcement.